English Reference
adjective

hilarious

adj.
US /hɪˈɫɛɹiəs/ UK /hɪlˈeəɹɪəs/ hi·lar·i·ous

  1. 01 B2 Upper Intermediate

    extremely funny; something that makes you laugh out loud.

    extremely amusing or funny; as an extreme adjective, it is typically modified by 'absolutely' rather than 'very'.

    Simple

    The comedian told a hilarious story about his first day at work.

    In context

    The play was absolutely hilarious, with the audience frequently erupting into spontaneous laughter at the lead actor's physical comedy.

    Usage

    Usually functions as a non-gradable adjective; it is more common in spoken English and informal writing than in academic contexts.

    Teacher's tip

    Learners often over-use 'very' with this word; remind them that 'hilarious' is already at the top of the 'funny' scale.

    Pitfall
    The movie was very hilarious. The movie was absolutely hilarious.

    Since 'hilarious' already means 'very funny', you should use 'absolutely' or 'really' instead of 'very' to add emphasis.

    hystericaluproarioussidesplitting
    serioustragicunfunny

The joke became even funnier when it sold for $6.2m, then hilarious when its buyer took a bite out of his purchase and swallowed it .

The Guardian· 3 Sept 2026

Many of Hanlon’s best jokes are visual, providing hilarious reading for lap-sitters and early readers.

The Conversation· 14 Aug 2026

Learned borrowing from Latin hilaris (“cheerful”) + -ous, from Ancient Greek ἱλαρός (hilarós, “cheerful, merry”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Ancient Greek ἱλαρός
Level B2 · Upper Intermediate
Frequency Common
Updated